Extend Active Directory Schema - Windows Server 2019

drClays 146

Hello,

I need to extend my AD Schema on Windows Server 2019.
I need to add a new attribute for users.

How do it correctly?

Accepted answer

Mark Taylor 311 Reputation points

2022-11-16T10:15:18.883+00:00

I did this a number of years ago following this article on TechNet:
https://social.technet.microsoft.com/wiki/contents/articles/51121.active-directory-schema-update-and-custom-attribute.aspx

Amongst the particular roles of some Domain Controllers there is the Schema Master, which is what you need to identify, switch to a writeable mode (it's set as read-only to avoid mistakes). Great care should be taken due to the potential for messing it up. I never had the luxury of a test labl, but that would be idea.
The article is fairly long, so read it through a couple of times, the examples were helpful to me).
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drClays 146 Reputation points

2022-11-17T15:08:10.7+00:00

Hi @Mark Taylor ,

I do it following this article, but I don't have a new attribute in users Attribute Editor:

What did I do wrong?
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Gary Reynolds 9,416 Reputation points

2022-11-19T09:25:59.743+00:00

Hi @drClays

The screenshots look ok, so not sure why it's not working. Have a look at this article on how to check if the new aux is shown in structure view and new attribute listed - https://nettools.net/schema-class-browser/

Just one point, as there is only one attribute in your aux class, is the aux class required and maybe just add the attribute to the user class.

Gary.
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drClays 146 Reputation points

2022-11-21T11:52:24.637+00:00

Hi @Gary Reynolds

Thanks for the answer.

I check it on NetTools and I have it there.

Just one point, as there is only one attribute in your aux class, is the aux class required and maybe just add the attribute to the user class.

What do you mean here? What attribute more I can add there?

Gary Reynolds 9,416 Reputation points

2022-11-21T20:49:04.523+00:00

Hi,

If you are seeing the attribute in NetTools but not ADUC, then I would suggest restarting it and try again, as ADUC uses a schema cache which is only refreshed when it starts

Aux classes are normally used to simplify the management and assigning multiple attributes to a number of classes, from the details provided so far, you are only assigning one attribute to the user class, you could just assign the office365 attribute to the user class directly and not use the aux class.

Gary.

drClays 146 Reputation points

2022-11-29T13:42:20.11+00:00

I add the attribute to the user class and it's working.

Thanks for help.
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Extend Active Directory Schema - Windows Server 2019

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